| Contents |
Ground Colour |
First Colour Band |
Second Colour Band |
| Cooling Water |
Sea green |
French blue |
— |
| Boiler feed water |
Sea green |
Gulf red |
— |
| Condensate |
Sea green |
Light brown |
— |
| Drinking Water |
Sea green |
French blue |
Signal red |
| Treated Water |
Spa green |
Light orange |
— |
| Fire water |
Fire red |
Crimson red |
— |
| Central heating below 60°C |
Sea green |
Canary yellow |
— |
| Central heating 60°C to 100°C |
Sea green |
Dark violet |
— |
| Central heating above 100°C |
Sea green |
Dark violet |
Signal red |
| Cold water down service from storage tanks |
Sea green |
French blue |
Canary yellow |
| Domestic, hot Water |
Sea green |
Light grey |
— |
| Hydraulic power Water |
Sea green |
Black |
— |
| Sea, river, untreated Water |
Sea green |
White |
— |
| Filtered water |
Sea green |
Light brown |
— |
| Soft water |
Sea green |
Light brown |
Signal red |
| Warm water |
Sea green |
Light grey |
Canary yellow |
| Chilled water |
Sea green |
Black |
Canary yellow |
| Sprinkle and hydrant water |
Sea green |
White |
Signal red |
| Waste water |
Sea green |
Canary yellow |
Signal red |
| Compressed air, up to and including 15 kg/cm’ |
Sky blue |
— |
— |
| Compressed to over 15 kg/cm’ |
Sky blue |
Signal red |
— |
| Plant air |
Sky blue |
Silver grey |
— |
| Instrument air |
Sky blue |
French blue |
— |
| Dry vacuum |
White |
— |
— |
| Wet vacuum |
White |
Dark violet |
— |
| Very high pressure steam |
Aluminium to IS 2339 |
Signal red |
— |
| High pressure steam |
Aluminium to IS 2339 |
French blue |
— |
| Medium pressure steam |
Aluminium to IS 2339 |
Gulf red |
— |
| Low pressure steam |
Aluminium to IS 2339 |
Canary yellow |
— |
| Drainage |
Black |
— |
— |
| Town gas |
Canary yellow |
— |
— |
| Light diesel fuel |
Light brown |
Brilpant green |
— |
| High speed diesel fuel, |
Light brown |
— |
— |
| Paraffin oil |
. Light brown |
Signal red |
— |
| Quenching oil |
Light brown |
Canary yellow |
— |
| Furnace fuel |
Light brown |
French blue |
— |
| Lubricating oil |
Light brown |
Light grey |
— |
| Hydraulic power |
Light brown |
Dark violet |
— |
| Transformer oil |
Light brown |
Light orange |
— |
